mova z60 ultra wont mop

hello

my mova z60 ultra wont mop.
if i tel hem to mop, it does the cleaning of the mop, drives 1meter out of the chargingstation en then tells its finishd.
if i tell him to vaccuum, no problem
in cleangenious (have only see him vaccuum in this mode) it does the rooms i tell him to do.

what can i do about this?

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